Home / 1,218,269,215.14-1,681,231,967.38-661,352,260.38

Finding the Fourth Proportional to 1,218,269,215.14, 1,681,231,967.38 and 661,352,260.38

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Solution

The fourth proportional to 1,218,269,215.14, 1,681,231,967.38 and 661,352,260.38 is: 912,677,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,269,215.14 : 1,681,231,967.38 = 661,352,260.38 : x
  2. Step 2: Convert to fraction form
    1,218,269,215.14/1,681,231,967.38 = 661,352,260.38/x
  3. Step 3: Cross multiply
    1,218,269,215.14x = 1,681,231,967.38 × 661,352,260.38
  4. Step 4: Simplify right side
    1,218,269,215.14x = 1,111,886,561,849,877,504
  5. Step 5: Solve for x
    x = 1,111,886,561,849,877,504/1,218,269,215.14
  6. Step 6: Final answer
    x = 912,677,221.12

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.